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Jenn en'onen KRIEQhBAUM, 0F YOUNGSTOWN, onto.

Letters PtitentNo. 78,101, dated May 19,1868. I

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TO ALL WHOM IT MAY concerts;

Be it known that I, JOH1 I GEORGE KRIECHBAUM, of Yo ungstown, in the county of Mahoning, and State of Ohio, have invented a new-an d iihproued Safe-Door Lock; and I do hereby'declare that the following is a full, clear, and exact description thereof, which will enable those skilled in the art to uiake and use the same, reference being had to the accompanying drawings, forming part of this specification, in which- Figure 1, Sheet L representsfa front view ofthc front plate and knob, showing the key-hole open.

Figure 2, Sheet I, is a vertical cross-section through the look-when the same islocked, the plane of section being taken through the shaft .ofthe plate 'cov ering the key-hole, and. through the knob.

- Figure 3, Sheet I, is a vertical cross-section, takenthrough the key-hole and knob, showing the parts in position after the setond move. 7 v V Figure 4, Sheet I, is a similar view,'s howing the parts in position after the third move.

Figure 5; Sheet I, is a sectional front view of the lower part of the safe.

Figure 6, Sheet I, is a2 plan or top view of the key-hole plate. 7

Figure 7, Sheet I, is a detail sectional view through the shank of the same, the plane of section being indicated by the line" e o.

Figure 8, Sheet II, is a front view ofthe first inner plate.-

Figure 9, Sheet II, is a front view of the second inner plate.

Figure-10, Sheet III, is a front view of the third inner plate.

Figure 11, Sheet III, is a front view of the bolts on the fourth inner plate of the lock.

Siinilar letters of reference indicate corresponding parts, A

This invention relatesto a new safe-loch, which is soarranged that it cannot be opened, even with the correct key, unless the required movements are well known. s

The bolts are arranged in pairs, moving in opposite directions, one bolt moving out while the other is thrown in'by the key, so that there will always be onebolt out, which looks the door unless one bolt is, at the proper time and by the proper motion, thrown out'of gear.

In the door no hole for the insertion of the key is to be seen when the door is locked, and the key-hole cannot be opened unless a certain .plate is moved on the under side of. the safe.

, This lock' is intended, when applied wholly as shown, tobc fittedjon safes which are set on wheels,lso, that the bottom of the safe is somedistanee above the fioor of the apartment.

A represents the casing-of the door at'the under side of the same, (see figs. 211ml 5.) In the same is secured a vertical, tubular screw, a, the lower end of which is flush with the under side of the case. A small square or other-hole in the-inside of the screw (t allows the application of a small key, 6, to'the same, (see fig. 2,)

whereby the screw a can be turned upwardiin the casing A.

The key-hole in at is, when the safe is locked, eoneealed by a sliding plate, c, arranged on the under side of the safe. This plate can be pressed up at its outer end, when its end will fit into a space, d, which is provided for its reception in the lower part of the casing A. a r v By throwing the outer end of the plate 0 up into thespaced, and by then pushing it back toward and into the slot, the key-hole in 'a, will be disclosed. A shoulder is formed on the plate a to allow its being pulled back again over the'key-hole to conceal the same. In fig. 5 the key-holed is represented as being covered by the plate a.

B is the front plate of the safe-door or of the lock. Qis the back plate of the lock. Betweenthe front and back plates are arranged, within the lock, four stationary vertical plates which divide the lock into five cells or departments. The plates are numbered respectively 1, 2, 3, and 4, and the,compartlnents D, E, F, G, and H, as is clearly shown in fig. 2,

I is a bar, having a number of shoulders andgrooves, to be hereinafter described. This baris arranged horizontally, and passes through th'e'plates B, 1, 2, 3, and 4,10 the plate C, so that its inner end touches the same when locked, as'in fig. l l I i I In front, and on the outside of the plate 13, the bar I is provided with a knob or handle, e, as shown 'in figs. Land Z. The key-hole in the front plate 13 is in a recessed portion of the said plate, the recess being, when the door is locked and the key removed, covered by a plate, J, as shown in fig. 2, said plate completely -c overing .the key-hole and filling the aforesaid recess, and, being flush with the f tce of the door, the key-hole cannot be reached by burglars. I

- v In the department E, between the plates 1 and 2, is arranged a vcrtical sliding bar, f, which has ahorizontal'arin on-its-upper end,- as is shown by dotted. lines in fig. 8. This horizontal arm fits into a recess, 9, provided in the bar I between two shoulders, as shown in fig. 2, and thus the barf locks the bar ,I, and the latter cannot be pulled out unless the horizontal arm of the bar f is raised out of therecoss g. The bar f reaches down through the whole length of the safe-door, and its lower end rests upon the head of the screw a, as, shown in fig. 2. I I I I 'A recessis left above the head of the screw a, between the door andthe casing A, a s-shown in fig. 2. When, therefore, the plate a has been moved aside, so as to clear the key-hole in a, and when, then, the key'b has been inserted into the screw a,,the latter 'can be screwed up, thereby raising the barf, and raising the horizontal arm of the latter out of the recess g in the bar I. i

'7; is another recess in the bar I, in front of the recess g, a shoulder, 2', being between the recesses g and It, as is clearly shown in figs. 2, 3, and 4'. i A spring-plate, K, which issecured to the front of the plate 1. (sec fig. 8,) is'thrown intoth'e recess it, when the bar I is'movcd in, as in fig. 2.

One side of the shoulder is flattened or filed oii, as seen in fig. 8, so as to be flushwith the reeessesg and Then the bar I is released from the barf, it must be turned, so that the flat side of the shoulder i comes in line with the edge of the plate K Then'the bar I can be pulled out a little, I

The knob e should have a mark, which, when thek'nob is turh'ed so'that the mark is on the upper side, or in any other certain position, indicates the position of the bar I in which it can be pulled forward I The plate J is secured upon an eccentric or other shank, 70, (-see figs.-6 and 7,) whielrfitsthrough holes in the plates and 2, as shown in figiZ. I v I A notch or recess is cut into the shank as seen in figs. 2,6,and 7. I I

When the plate J is closed over the key-hole, thespring-plateK is forced into the said notch, and thereby locks the. plate J to the face of the door, (see also fig. 81) I Y I lis aispring, secured to the front of the plate], as seen in fig. 8, and i'orked-at-its free end, so as to fit around the shank k. I I i I v The springl continually presses against a shoulder formed on the shank /t," and therefore has a tendency to throw the plate J out, as soon as thcspring-plate K releases the same. I I

When, therefore, the barfhas been moved up, by the action of thekey 11 upon the screw afthe bar I will be released from its horizontal arm, and can be drawn out, when turne'ch so as to move clear oithc. plate K.

When the bar I is drawn out, so that the spring-plate K presses against the ccccntric-shoulrlcr,.i, on the I bar, ,and when vthe bar I is. turned, the thicker part oi the shoulder i will be brought against the pla e K, and the same will be pushed aside, as shown by red lines in fig. 8.' Thereby the shank is will be released from the plate K, and while thus momentarily released, it will be thrown forward by the action of the spring Z.

The plate J will thus be thrown out of the recess in the plate 13, and the key-hole in thcplate B, which 'was covered by the-plate J, will be disclosed by turning the plate J, as in fig. 1, On the end of the shank 7: is a head, provided with a. screw-thread, as in figl 2. I

When the plate J is thrown out, it should be turned to the left, so as to screw the head into the pIate 1, as the same would otherwise be in the compartment E, and would obstruct the turning of the main key in the said compartment. 1 i i The lower end of the barf'projects beyond the under side of' the -safe-door, as seen in figs. 5-and 8, and l near to its extreme-end it has a notch or recess, as shown. I I F When the door is all openedfthe barf may be pushed up. by'h-and, and can be locked by a bolt, in; so as i to be prevented from comingdown again. The action of the key 6 and screw a can thus, for a time, be dispensed l with. .By turning the bolt mi away from the barf, the latter will, by its own weight, be thrown into the recess g as soon as the door is locked. Y I v Upon the face of the plate; is secured a revolvingdis k, L, fig. 11, upon which a toothed wheel, n, is mounted:

M' and N are the bolts, guided upon the plate 4, and fitted eachto a toothed rack, as shown in fig. -11.

Therack 0, which is connected to the upper boltllLds pivoted to the same by a. pin, 1), so that the rack can be turned up, swinging around the pin 19, as indicated by red lines in fig 11. The rack qis fitted securely to the lower bolt N, and can only slide with the same. I v

Each bolt may be branched into two; or more or less, parts, which workinto the casing of the door. They are guided between stops and pins in a suitable manner.

.Th'e racks o and q both mesh into the teeth of the wheel n, as isclearly shown in fig.- 11. In theedge of the disk L are four, more 'or less, notches, fig, 11, for the reception of the bit ot the key.

. It will'be seen that the bolts, when the disk in is turned by the key, will move in opposite directions, as they mesh into opposite sides of the wheel n. 7

Between the'plates L and 4 is interposed a sliding plate, 5, which is slotted, so as to move on the pin arou nd which the disks L' 11. turn.- A spiral spring throws it towards the key, and throws also a. pin, 3, into notches on the diskL. I i I r I When the key 0 is inserted, as shown in fig. 11, its bit will fit into one of the four, or more or less, large notches in the disk L, after it has thrown the tumbler as out, and it can then turn the disk L n in either direction; '7 i In fig. 11 it isreprese'nted as having turned the disk'L as far as possible in the direction of the arrow 1, as in that position the lower bolt is pushed quite out, and the upper bolt is drawn quite in. The disk coiild no further be turned in that direction, owing to the stops against which the bolts strike. 7 i t In figi9, the key has been once turned, from the fig. 11 position, to the right. The upper bolt is pushed out one-fourth of its length; thelower bolt is drawn asmuch in. c

In fig. 8, one more turn of the key has beenmadein that direction, both bolts projecting equally far 'from the edge of the door.

Thus it will be seen that when the door is locked, arid' the key inserted so as to strikeagainst the 'plate 4, the door cannot be unlocked, as one of the bolts, at least, always projects into the casing of the door. Only when the upper r'ack o is turned up, sons to be out of gear with the wheel at, whereby the bolt M is disengaged iron] the key, can the lock be opened by drawing the bolt N in.

, The bolt M, when .tobe thrown out of gear, must be drawn in, as in fig. 11, so'a-s not to be in the way of opening the door. Then the racko might be thrown up. n

t is a horizontabpin, secured to the face of the plate 0, and projecting through the plates 3 and 2, into the compartment E, as shown in figs. Q, 3, and 4.

' In each plate 2 and 3 is a slot, to-allow the pin t to move with the rack o and-jbolt M.

Upon the plate 3, is hinged a' plate, P,-which has a slot, u, fitting over the pin t, so thatiwhen the key is insertedto a certain mark, 2, so that the bit comes into-the chamber F, it will be ableto raise the'plate P, and with it the rack o Asegniental slot, 11, isfor that purpose-arranged in the plates 3 and 2. i 7

But the-upper part of the plate P strikes against the bar I, and therefore-the rack'o cannot bedisengaged unless the bar I is drawn out so far that a narrowslot, w, of the plate P, will fit around a narrow portion of thcbarI. I

Uponthe plate 2 is pivoted a plate, R, which has a curved neck, fitting over a recess, :0, of, the bar l.

The bar can therefore only be drawn out if the plateB is raised out of the recess, but this cannotbe done, unless the bolts are in one particular-position, in which the pint is brought over a small 'recess, y,fof the plate R, (fig, 9,) whereby the-plate R is allowed to be raised; otherwise it cannot be raised, asit would strike against the pin it. i

The position required in the look, when the same arranged as in'the drawing, be pushed out one-fourth, andthc bolt N three-fourths of its length. i

When, now,'the key is inserted toa certain mark, (1,) so that its bit cornes'int'o the cdnipartinetitE, it will raise the plate R, and'will raiseitout of the recess :0, as shown by red lines in fig. 9.

' While the plate R is thus held raised by the bit of the key, the bar' I can be drawn out, sothat it will be in the position shown in fig. 4. i d I Then then arrow part, a of the bar I, will hoover the slot to of the plateP, (fig-10,) so that the plate P n ight be raised toxthrow the rack oout of gear, if the pin t would'be in line with thc segmental slot v, but this is not the case asllong as the bolt M is not quite drawn in, which it was not during the operationpn the plate R.

7 Thus, after the plate R has'been raised, and'the bar I pulled out, the key must be brought against plate 4, and must be turned once'aronnd tothb left, to draw the bolt M in;. then it'rnust be applied to the? plate P,-raisc that, and with it the rack of.

The plate P has two notches, into one of which a catch, S, fits. When the plate israised by th e=key, the catch Swill hold it suspendc ch'and thereby hold the bolt M out of gear as long'as the keyisnotitiirned-quite arpuud in" the compartment 3; therefore the key must be turned half-way-round,rand then back again, It turned quite round, it will come against a downward-imlining plane on the plate P, and will disengagethesame'from the catch S, and will make it drop down again. l 7

I will now recapitulate the movementsnecessary for opening the lock.

The plate a most be drawn back, key 6 inserted, screw a screwed up. At the same time, the bar I must be drawn out. y i i I Then the plate Jjunips forward, and should be partly scr'ewedto the left, to fasten it to plate 1.

Then the key should lie-inserted as far as possible, and should be turned to at left as often as-po'ssible, andthen once to the right.

Then the key isdnserted, (to the mark 1,) to raise the plate R. While raising the saine, the bar 'I should be drawn out. i I i i t Then the key is againpushed to plate 4, and turned once to the let's; then taken out, and. inserted, (to mark '2,) to raise plate P. To'do do this, it is-turned hal-f' round and back again; not wholly round. S

Then the key is inserted again as far as possible, and turned to the right as often'as possible, when the door will be open,

To lock, the proceeding is reversed.

The plate J may be formed on the key 0, so as to be the knob or handle of the same. Then the shank It would be part of the stem of the key, with 'all' its recesses, &c., and the key would be concealed in the look,

when the same is locked, policy-hole being required.

It will be seen that this look allows a great many variations in. its construction, and that it cannot be opened unless the exact formula for opening the same is known..

Iclaim as new, and desire to secure by Letters Patent-- 1. The screw (1, when operating as herein shown and described, in combination with the bar I, all made'and operating substantially as-herein shown and described.

2. The bar f, bar I, and plate K, when arranged as described, in combination with the spring -Z, shank.

is, that the .b ltM should and plate J, (or stem 7: of key, and head J of the same,) all made and operating substantially as herein shown and described. V

3. The bolts M and N, when the same are so'arranged in one lock, that when one bolt is me yed out, the other is drawn in, and vice versa, as set forth. I

4'. The rack 0, when hinged to the bolt M, so that it can be'turnecl up and thrown out of gear, as and for the purpose set forth. p I

v5. The'pin t, on the plate 0, in combination with the slotted partitions 2 and 3, and hinged spring-plates P and R, all made-and operating substantially as herein shown and described. i

6. The plate P, when. provided with a slot, w, and when combined with the pin t and bar I, all.madc and operating substantially as herein shown and described. I

7, The plate I, when arranged in combination with the catch .8; so that a "full turn of the key will not keep it up, as set forth; s

8; The plate B, when provided with a slot or "recess, y, and when combined with the pin 27 and bar I, all

made and operating substantially as herein shown anddescribed.

9. The bar I, when providediwith recesses g, h, and w, in combination with the plates K, f, R, and P, all made and operating substantially'as herein shown and described.

i I i JOHN GEORGE KRIEOHBAUM.

Witnesses:

R. J. WIcK, T. L. M00312. 

